-% \ifltj@everyhook@avail
-% \PushPreHook{hbox}{%
-% \directlua{luatexja.direction.set_list_direction_hook()}%
-% \aftergroup\ltj@@reset@badness
-% }
-% \PushPreHook{vbox}{%
-% \directlua{luatexja.direction.set_list_direction_hook()}%
-% \aftergroup\ltj@@reset@badness
-% }
-% \else
-% {\catcode`\!=0\catcode`\\=12
-% !@PackageWarningNoLine{luatexja-core}{%
-% I will use \everyhbox and \everyvbox directly !MessageBreak
-% for supporting multiple directions, !MessageBreak
-% since everyhook.sty is not available}}
-% \everyhbox{%
-% \directlua{luatexja.direction.set_list_direction_hook()}%
-% \aftergroup\ltj@@reset@badness
-% }
-% \everyvbox{%
-% \directlua{luatexja.direction.set_list_direction_hook()}%
-% \aftergroup\ltj@@reset@badness
-% }
-% \fi
-
-\let\ltj@@everyhbox=\everyhbox\let\ltj@@everyvbox=\everyvbox
-\newtoks\ltj@@i@everyhbox\newtoks\ltj@@i@everyvbox
-\let\everyhbox=\ltj@@i@everyhbox\let\everyvbox=\ltj@@i@everyvbox
-\ltj@@everyhbox{%
- \directlua{luatexja.direction.set_list_direction_hook()}%
- \aftergroup\ltj@@reset@badness\the\ltj@@i@everyhbox}
-\ltj@@everyvbox{%
- \directlua{luatexja.direction.set_list_direction_hook()}%
- \aftergroup\ltj@@reset@badness\the\ltj@@i@everyvbox}
+\ifltj@everyhook@avail% using everyhook package
+ \PushPreHook{hbox}{%
+ \directlua{luatexja.direction.set_list_direction_hook()}%
+ \aftergroup\ltj@@reset@badness
+ }
+ \PushPreHook{vbox}{%
+ \directlua{luatexja.direction.set_list_direction_hook()}%
+ \aftergroup\ltj@@reset@badness
+ }
+\else
+ \let\ltj@@everyhbox=\everyhbox\let\ltj@@everyvbox=\everyvbox
+ \newtoks\ltj@@i@everyhbox\newtoks\ltj@@i@everyvbox
+ \let\everyhbox=\ltj@@i@everyhbox\let\everyvbox=\ltj@@i@everyvbox
+ \ltj@@everyhbox{%
+ \directlua{luatexja.direction.set_list_direction_hook()}%
+ \aftergroup\ltj@@reset@badness
+ \the\ltj@@i@everyhbox}
+ \ltj@@everyvbox{%
+ \directlua{luatexja.direction.set_list_direction_hook()}%
+ \aftergroup\ltj@@reset@badness
+ \the\ltj@@i@everyvbox}
+\fi